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Chapter 7 Menus
110
7-3 Extended Menu
What is a UMID?
The UMID (Unique Material Identifier) is a unique
identifier for audio-visual material defined by the
SMPTE330M-2003 standard.
The UMID may be used either as the 32-byte Basic UMID
or as the Extended UMID, which includes an additional 32
bytes of Source Pack to make a total 64 bytes.
For details, refer to SMPTE 330M.
Globally unique ID is automatically recorded in clip units.
The Extended UMID is metadata that provides additional
information such as location, time/date, company and so
on.
The UMID is applied as follows.
Using the Extended UMID
You have to enter a country code, organization code and
user code. Set the country code referring to the ISO-3166
table, and set the organization code and user code
independently.
For details, see “About UMID ownership information”
(page 111).
Functions of UMID data
The UMID data enables the followings:
• Add a globally unique ID to every clip of audio-visual
material. The unique ID is used to detect the material
source and to link it with the original source material.
• Distinguishing between original material and copied
material. 00 is added to the Instance Number for original
material.
• Recording based on the UTC. The UTC is used when
recording the UMID. This enables uniform control of
source material recorded all over the world based on the
universal time code.
• Calculating the date difference among source materials.
The source material is recorded based on the MJD
(Modified Julian Date), which enables easy calculation
of date difference among source materials.
Setting UMID ownership information
Proceed as follows.
1
Set extended menu item 029 “STORED
OWNERSHIP” to “on.”
See 7-2-2 “Basic Menu Operations” (page 94) for
more information about how to make this setting.
Extended UMID (64 bytes)
Basic UMID (32 bytes) Source Pack (32 bytes)
Universal label L Inst. No. Material Number Time/Date
Spatial
Co-ordinates
Country Org User
12 bytes 1 3 bytes 16 bytes 8 bytes 12 bytes 4 bytes 4 bytes 4 bytes
Instance No.
Material No.
ID generated when
recording
Same as the above
Source Pack
Shooting information (when,
where and who)
Same as the above
M
Distinguishing between the
original material and copied
material
M
Material source ID/detecting
material
M
Metadata pack that identifies
the source of material unit by
defining the when, where
and who of the material unit
with which it is associated.
Original material: 00 00 00
Copied material: generation number
(1 byte) + random number (2 bytes)